I hadn't played WoT a lot but never tried WoWS because I didn't like WoT years ago. Problem for me was mechanics. Game was just too much about positioning and stuff, I felt like everyone knows something on each map that I don't and that felt frustrating. Light tanks were fun tho. WoWS is much easier and interesting for me in comparison because You're not tied to some boring gameplay with staying in bushes and till you not breaking few rules you can do what you want. Despite the fact that ships feels slower than tanks game is more dynamic.
That's why I loved WoTB too before it's decline. Sad to see that WoWS is also in the state of decline.